Updated Dride to Raspbian Stretch (#1)

* Stretch base system working W/O DRIDE

- Currently removed Dride edits/software to get base OS working

* Enabled Ether over USB

I slightly rearranged a few startups in stage2 to give us room for more expansion later.  Boot files update important to come prior to Dride software.
Stretch base system working W/O DRIDE

* Dride+Stretch working

- wifi works with specific Dride network
- usb0 interface also works if you need to debug/hack

All Dride network items have been separated into this step

* DrideOS gets Dride software added back in on Debian Stretch

- software base; testing commencing

* Added new dride partition, clean, updated README

- updated README to explain how this has been modified vs. upstream
- removed and cleaned unused scripts
- added dride partition creation on startup (runonce)
- drideOS conditional renamed to dride-plus

* Use the /dride path and provide soft links during software installation

- updated README

stage2/05-dride-net/files/usr_lib_dhcpcd

@@ -0,0 +1,28 @@
+#!/bin/sh -e
+
+#
+# This file belongs in /usr/lib/dhcpcd5/dhcpcd how you get it there is up to you
+#
+
+DHCPCD=/sbin/dhcpcd
+INTERFACES=/etc/network/interfaces
+REGEX="^[[:space:]]*iface[[:space:]](*.*)[[:space:]]*inet[[:space:]]*(dhcp|static)"
+EXCLUDES=""
+
+if grep -q -E $REGEX $INTERFACES; then
+        #echo "Not running dhcpcd because $INTERFACES"
+        #echo "defines some interfaces that will use a"
+        #echo "DHCP client or static address"
+        #exit 6
+        for iface in `grep -E $REGEX $INTERFACES | cut -f2 -d" "`
+        do
+                if [[ $EXCLUDES != "" ]]; then
+                        EXCLUDES="${EXCLUDES}|${iface}"
+                else
+                        EXCLUDES="${iface}"
+                fi
+        done
+        EXCLUDES="(${EXCLUDES})"
+fi
+
+exec $DHCPCD -Z $EXCLUDES $@